Application of dynamic vibration absorber for vertical vibration control of corrugated rolling mill

A variable mass tuned particle absorber is designed for the nonlinear vertical vibration control of the corrugated rolling mill in the composite plate rolling process. Considering the nonlinear damping and nonlinear stiffness between the corrugated interface, a three-degree-of-freedom nonlinear vertical vibration mathematical model of corrugated rolling mill based on dynamic vibration absorber control is established. The multi-scale method is used to solve the amplitude–frequency characteristic curve equation of the installed dynamic vibration absorber (DVA) system. The effects of stiffness coefficient and damping coefficient on the amplitude–frequency characteristic curve are analyzed. The expressions of the dynamic developed factor of the corrugated roll are derived, and the influence laws of mass ratio, frequency ratio and damping ratio on the dynamic amplification factor are analyzed. The optimal parameters of the DVA are obtained by adaptive genetic algorithm. The control effect of the DVA on the nonlinear vertical vibration is studied by numerical simulation. The feasibility of the designed dynamic absorber is verified through experiments. The results show that the designed dynamic absorber can effectively suppress the vertical vibration of the corrugated roller.